Freedom fighters.-

Can someone tell me the difference between freedom fighters and terrorists? I am too thick and I can not understand it...
 This is not terrorism eulogy but my right based in the points 18 and 19 of the UDHR1948 (amended 1976). For me ETA, HAMAS, IRA, Terra Lliure, MPAIAC, Frente Polisario, etc., are not terrorists but freedom fighters fighting for the land of their fathers, grandfathers, great-grandfathers, great-great-grandfathers... that have been taken by invaders and kept at gun point for ever. The difference of definition between terrorism and National Security all depend of the side that makes the definition. If you are Estate National Security you can kill unpunished and become an hero, but if you are a freedom fighter, aka “terrorist”, and you kill you are a criminal. Who were the “terrorists” in what today is called Israel in 1940s? Well… “Their” behaviour nowadays would be called “terrorism”, not doubt about that… And what the French did in Algeria killing and torturing even children? Why no can be applied the French point of view when torturing children of “kill them before they grow” to every body instead of calling the freedom fighters criminals when civilians and/or a child gets caught in the cross fire?
“War is the terrorism of the riches and terrorism is the war of the poors”. Carlos Alberto Libanio (aka Fray Betto), ex-Brazilian polititian and anti-poverty campaigner.
 Yes… Tell me…